you need the ip and path to share. For example
Code:
#/etc/exports file on your desktop computer
192.168.1.2:/home/MyShareFolder (rw,async)
You also need to restart /etc/init.d/nfs, or maybe /etc/init.d/nfsd on the desktop computer
Aftwards, on the desktop computer type
to view nfs shares
I don't think it's a firewall issue since you are getting the permission denied. YOu would get a "cannot connect" error if it was a firewall